Effect of fast neutron irradiation induced defects on the metamagnetic transition In Ce(Fe_(0.96)Ru_(0.04))_2

C. L. Prajapat; V. Dube; A. K. Rajarajan; S. V. Thakare; K. C. Jagadeesan; P. K. Mishra; M. R. Singh; S. K. Gupta; G. Ravikumar

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Effect of fast neutron irradiation induced defects on the metamagnetic transition In Ce(Fe_(0.96)Ru_(0.04))_2

机译：快速中子辐照缺陷对Ce（Fe_（0.96）Ru_（0.04））_ 2中亚磁性转变的影响

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Effect of fast neutron irradiation induced defects on the anti-ferromagnetic (AFM) to ferromagnetic (FM) transition in Ce(Fe_(0.96)Ru_(0.04))_2 is studied by magnetic measurements. We observe that at a given temperature, AFM-FM transition occurs at a lower field in irradiated specimens compared to that in pristine samples. While irradiation does not seem to affect the hysteresis of the transition, zero field susceptibility is enhanced by more than an order of magnitude. Analysis of reversible magnetization vs field data at low fields indicates superparamagnetic behavior of nano-sized FM domains, which are conjectured to nucleate on the crystal defects produced by the fast neutron irradiation. The number density and size of the nano-sized domains in the irradiated and pristine samples are estimated from the magnetization data.

机译：通过磁测量研究了快中子辐照引起的缺陷对Ce（Fe_（0.96）Ru_（0.04））_ 2中反铁磁（AFM）到铁磁（FM）转变的影响。我们观察到，与原始样品相比，在给定温度下，被辐照样品的AFM-FM跃迁发生在较低的磁场中。虽然辐照似乎不影响过渡的磁滞，但零场磁化率却提高了一个数量级以上。在低磁场下对可逆磁化强度与磁场数据的关系分析表明，纳米级FM域具有超顺磁行为，可以推测它们在由中子快速辐照产生的晶体缺陷上成核。从磁化数据估计被辐照和原始样品中纳米尺寸域的数量密度和尺寸。

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来源
《Journal of Applied Physics》 |2012年第6期|p.063922.1-063922.5|共5页
作者
C. L. Prajapat; V. Dube; A. K. Rajarajan; S. V. Thakare; K. C. Jagadeesan; P. K. Mishra; M. R. Singh; S. K. Gupta; G. Ravikumar;
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Technical Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India;

Technical Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India;

Solid State Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India;

Radio Pharmaceuticals Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India;

Radio Pharmaceuticals Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India;

Technical Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India;

Technical Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India;

Technical Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India;

Technical Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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Effect of fast neutron irradiation induced defects on the metamagnetic transition In Ce(Fe_(0.96)Ru_(0.04))_2

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